中国物理B ›› 2020, Vol. 29 ›› Issue (9): 98504-098504.doi: 10.1088/1674-1056/aba610

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High performance Cu2O film/ZnO nanowires self-powered photodetector by electrochemical deposition

Deshuang Guo(郭德双), Wei Li(李微), Dengkui Wang(王登魁), Bingheng Meng(孟兵恒), Dan Fang(房丹), Zhipeng Wei(魏志鹏)   

  1. State Key Laboratory of High Powder Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
  • 收稿日期:2020-06-09 修回日期:2020-07-02 接受日期:2020-07-15 出版日期:2020-09-05 发布日期:2020-09-05
  • 通讯作者: Dengkui Wang, Dan Fang E-mail:wccwss@foxmail.com;fangdan19822011@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61704011, 61674021, 11674038, 61574022, and 61904017) and the Innovation Foundation of Changchun University of Science and Technology (Grant No. XQNJJ-2018-18).

High performance Cu2O film/ZnO nanowires self-powered photodetector by electrochemical deposition

Deshuang Guo(郭德双), Wei Li(李微), Dengkui Wang(王登魁), Bingheng Meng(孟兵恒), Dan Fang(房丹), Zhipeng Wei(魏志鹏)   

  1. State Key Laboratory of High Powder Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2020-06-09 Revised:2020-07-02 Accepted:2020-07-15 Online:2020-09-05 Published:2020-09-05
  • Contact: Dengkui Wang, Dan Fang E-mail:wccwss@foxmail.com;fangdan19822011@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61704011, 61674021, 11674038, 61574022, and 61904017) and the Innovation Foundation of Changchun University of Science and Technology (Grant No. XQNJJ-2018-18).

摘要: Self-powered photodetectors based on nanomaterials have attracted lots of attention for several years due to their various advantages. In this paper, we report a high performance Cu2O/ZnO self-powered photodetector fabricated by using electrochemical deposition. ZnO nanowires arrays grown on indium-tin-oxide glass are immersed in Cu2O film to construct type-Ⅱ band structure. The Cu2O/ZnO photodetector exhibits a responsivity of 0.288 mA/W at 596 nm without bias. Compared with Cu2O photoconductive detector, the responsivity of the Cu2O/ZnO self-powered photodetector is enhanced by about two times at 2 V bias. It is attributed to the high power conversion efficiency and the efficient separation of the photogenerated electron-hole pairs, which are provided by the heterojunction. The outstanding comprehensive performances make the Cu2O film/ZnO nanowires self-powered photodetector have great potential applications.

关键词: electrochemical deposition, Cu2O/ZnO, self-powered photodetector, responsivity

Abstract: Self-powered photodetectors based on nanomaterials have attracted lots of attention for several years due to their various advantages. In this paper, we report a high performance Cu2O/ZnO self-powered photodetector fabricated by using electrochemical deposition. ZnO nanowires arrays grown on indium-tin-oxide glass are immersed in Cu2O film to construct type-Ⅱ band structure. The Cu2O/ZnO photodetector exhibits a responsivity of 0.288 mA/W at 596 nm without bias. Compared with Cu2O photoconductive detector, the responsivity of the Cu2O/ZnO self-powered photodetector is enhanced by about two times at 2 V bias. It is attributed to the high power conversion efficiency and the efficient separation of the photogenerated electron-hole pairs, which are provided by the heterojunction. The outstanding comprehensive performances make the Cu2O film/ZnO nanowires self-powered photodetector have great potential applications.

Key words: electrochemical deposition, Cu2O/ZnO, self-powered photodetector, responsivity

中图分类号:  (Photodiodes; phototransistors; photoresistors)

  • 85.60.Dw
73.40.Lq (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)